{"product_id":"fire-alarm-using-ir","title":"Fire Alarm Using IR","description":"\u003cp\u003e\u003cstrong\u003eUsing IR Fire Alarm\u003c\/strong\u003e is an automatic fire alarm system designed to detect the unwanted presence of fire by monitoring changes in the environment associated with flaming. T\u003cspan data-mce-fragment=\"1\"\u003ehe IR Receiver sensor detects the fire and generates an analog voltage. This variation is monitored by forming a potential divider circuit. \u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e In this \u003cstrong\u003eElectric\u003c\/strong\u003e \u003cstrong\u003eFire Alarm Kit\u003c\/strong\u003e, analog variation is converted into digital form using a dual op-amp IC LM358. The op-amp is used as a comparator in non-inverting mode to do so. In this operation, we set a reference voltage with the preset (potentiometer). If the analog voltage from the sensor is greater than Vref, then the output is logically high on pin 7 else it is low. The analog input is connected to the pin5 of LM358. The output from the LM358 drives the ULN2803 IC (it act as a current amplifier to meet the current requirement to drive the relay). \u003cbr\u003e\u003cbr\u003eThis \u003cstrong\u003eFire Detector Kit\u003c\/strong\u003e is an inverted IC means when input is low output is high and vice versa. This IC drives the relay to activate the alarm which is a piece buzzer. The relay acts as an electromagnetic switch to switch the high voltage to activate the buzzer.\u003cbr\u003e\u003c\/p\u003e\n\u003cdiv class=\"product_info\"\u003e\n\u003ch3 class=\"sing--sub-heading\"\u003eBlock Diagram\u003c\/h3\u003e\n\u003cdiv style=\"text-align: start;\" id=\"p_info\"\u003e\u003cimg alt=\"Fire-Alarm-Using-IR-block-diagram\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0587\/2130\/4757\/files\/Fire-Alarm-Using-IR.jpg?v=1632809540\" style=\"float: none;\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"product_info\"\u003e\n\u003ch3 class=\"sing--sub-heading\"\u003ePhysical Attributes\u003c\/h3\u003e\n\u003cdiv id=\"p_info\"\u003e\n\u003cul class=\"pro-ds\"\u003e\n\u003cli\u003eDimensions (cm) L x W x H : 20 x 15 x 5\u003c\/li\u003e\n\u003cli\u003eWeight (gm): 200\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"product_info\"\u003e\n\u003ch3 class=\"sing--sub-heading\"\u003eProduct Video\u003c\/h3\u003e\n\u003cdiv id=\"p_video\"\u003e\u003ciframe width=\"800\" height=\"400\" src=\"https:\/\/www.youtube.com\/embed\/UXuyic2lzb8\" title=\"YouTube video player\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen=\"\"\u003e\u003c\/iframe\u003e\u003c\/div\u003e\n\u003cdiv id=\"p_video\"\u003e\u003ciframe width=\"800\" height=\"400\" src=\"https:\/\/www.youtube.com\/embed\/6rmErwU5E-k\" title=\"YouTube video player\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen=\"\"\u003e\u003c\/iframe\u003e\u003c\/div\u003e\n\u003cdiv id=\"p_video\"\u003e\u003ciframe width=\"800\" height=\"400\" src=\"https:\/\/www.youtube.com\/embed\/Fp37DPZVdRI\" title=\"YouTube video player\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen=\"\"\u003e\u003c\/iframe\u003e\u003c\/div\u003e\n\u003c\/div\u003e","brand":"KitsGuru","offers":[{"title":"DO IT YOURSELF","offer_id":40708845174965,"sku":"LGKT033","price":549.0,"currency_code":"INR","in_stock":true},{"title":"READY TO USE","offer_id":40708845142197,"sku":"LGKT033_R","price":699.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0587\/2130\/4757\/products\/Sensitive-Fire-Alarm-Circuit-using-Infrared-IR-LED.jpg?v=1632809996","url":"https:\/\/kitsguru.com\/de\/products\/fire-alarm-using-ir","provider":"KitsGuru","version":"1.0","type":"link"}